#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

void DefStrcpy(char* a, const char* b)
{
	while (*a++ = *b++);
}

int main()
{
	char a[] = "abcdef";
	DefStrcpy(a, "hig");
	printf("%s", a);
	return 0;
}